Brake shoe



July 25, 1933- I R. A. GOEPFRICH I 1,919,550.

BRAKE SHOE Filed March 15, 1928 l N V ENTOR 'Rudolfihfldoe bfrzlch ATTORNEY Patented July 25, 1933 I UNITED STATES PATENT OFFICE f nonotrrr 'A. GOEPFRICH, E sonrrrsmvn, INDIANA. Assrenon, BY MESNE AssreivT MENTS, T0 BENDIX'AVIATION CORPORATION, OF SOUTH BEND, I1\TDIANA,A COR- PORATION OF DELAWARE BR KE snoE Application-filed March 15, 1928. sriaiiv 261,714.

This invention relates to brake shoes, and is illustrated as embodied 111 a rigid curved shoe for an internalexpandingautomobile v brake. An objectof the invention is to provide greater rigidity for ashes of this char: acter, by forming or displacing portions of the stiflening web crosswise oi": the shoe, preferably insuch a manner that the web undulates'crosswise ofthe shoe. The shoe may be formed of an element vhavingga straight web which is integral with the rim, and preferably: also, integral with an inner reinforcing flange, at intervals which alternate with portions that are structurally separate from the rim and flange and which are displaced crosswise of the shoe and then, if

desired, welded. or otherwise secured again to the rim and flange.

Other objects and teatures of the invention, including novel constructions at the ends of the shoe and various desirable details of construction; will .be apparent from the following description of two'illustrative embodiments shown in the accompanying drawing, in which:

Figure 1 isa'curved section, lengthwlseof the shoe, on the line1.1 of Figure 2, show-v ing the undulation of the web;

- Figure 2 is a section through the shoe on the line 2 2 of Figure 1;

Figures 3 and 4 are views corresponding respectively to Figures 1 and 2, but showing a diflferent shoe; f c

Figure 5 is a side elevation'o't theshoe of Figures 3 and 4; and V Figure 6 is a viewof the inner side of shoe of Figures 3 and 4; A g

The illustrated shoes are formed of eleshown 'or bent from straight members, and each havingfan outer rim 10 (to which the brake lining 12 is riveted or otherwise secured) and preferably also an inner reinforcing flange 14. The rim and flange. are connected by a web 16 (Figs. 1 and'2) or 18 (Figs. 3-6) having at, intervals portions which are integral with the rim and flange, these portions ofweb 16 being along one side of the shoe, while the corresponding portions of web 18 are between the side and a'web portion integral with the rim por edges of the shoe substantially in the central plane of the shoe Between the, integrally-connected portions of the webs 16 and 18 are structurally-sepa-. rate portions20 and 22,; preferably formed by cutting or otherwise severing the web at top and. bottom, these portions being displaced'crosswise of the shoe and if desired again secured to the rim and flange by welds 24. The portions 22 of web 18 are shown alternately displaced in opposite directions. In either case,'the result is a web undulating crosswise of the shoe. 1

At the anchoredend of the shoe, portions 26 and 28 of the rim and flange arebent smoothly around, and welded to the end of the web, which is here formed withan opening' for an anchor pivot 30. As best appears in Fi ure 6, the web 18 is preferably at one side of theshoe at its anchored end, so that. it will come next the backingplate of the brake and permit the use of avery short and rigid anchor pin.

At the other end of the shoe theweb 18 is preferably in the central plane of the shoe,

and portions 32 and 34 may be folded across g V K061145359, filed .J Line-15, 1932. ments, either formed in the curved shape v and a'web portion integral with the rim portion at spaced intervals alternating with intervals in which the'two portions are structurally separate, the web portion being displaced crosswise or the shoe, with respect to 2 its position where integral with the rim po rtion, where it is structurally separate from. the rim portion I 2. A brake shoe comprising a rim portion tion at spaced intervals alternating with tervals in which the two portions art structurally separate, the web portion being displaced crosswise of the shoe, with respect to its position where integral with the rim portion, where it is structurally separate from the ,rim portion and being permanently secured directly to the rim portion wherevso displaced.

3. A brake shoe comprising a rim portion and an inner reinforcing flange and a web portion integral with and connecting the rim portion and said flange at spaced intervals alternating with intervals in which it is structurally separate from the'rim portion and said flange- 4. A brake shoe comprising a rim portion and an inner reinforcing flange and a'web portion integral with and connecting the rim portion and said flange at spaced intervals alternating with intervals in -which it is structurallyseparate from the rim portion and saidflange, the web portion being displaced crosswise of the shoe, with'respect to its position where integral with the flange and. the rim portion, where it is structurally separate from the flange and the rim portion.

v 5. A brake shoe comprising a rim portion and an inner reinforcing flange and a web portionintegral with and connecting the rim portion and said flange at spaced intervals alternating with intervals in which it is structurally separate from the rim portion and said'flange, the web portion being displaced crosswise of the shoe, with respect to its position where integral with the flange and the rim portion, where it is structurally separate from the flange and the rim portion and being permanently secured directly to the rim portion where so displaced.

6. A brake shoe comprising a rim portion and an inner reinforcingflange and a web portion integral with and connecting the rim portion and said flange at spaced intervals alternating with intervals in which it is structurally separate from the rim portion and said flange, the web portion being displaced crosswise of the shoe, with respect to its position where integral with the flange and the rim portion, where it is structurally separate from the flange and the rim portion and being welded to therim portion and the flange where so displaced.

7. A brake shoe. comprising a rim portion and aweb portion integral with the rim porportion integral with and connecting the rim portion and said flange at spaced intervals alternating with intervals in which it, is structurally separate" from the rim portion and said flange, the integral intervals being along one side of the shoe.

.9. A brake shoe comprising a rim portion 7 and an inner reinforcing flange and a web portion integral with and connecting the rim portion and said flange atspaced intervals alternating with intervals in which it is structurally separate from the rim portion and saidflange, the integral intervalsbein between the side edges of the. shoe.

10. A brakeshoe comprising a rim portion and a web portion integral with the rim portion at spaced intervals alternating with intervals in which the .two portions are structurally separate, the integral intervals being along one side ofthe shoe, and the web portion being at one side of the shoe at least at one end of the-shoe.

11. A brake shoe comprising a rim portion and a web portion integral with the rim portion at spaced intervals alternatingwith intervals in which the two portions are structurally sep arate, the integral intervalsbeing along one side of the shoe, and the web portion being at one side of the shoe at least at the anchored end of the shoe. 1 a

12. A brake sh'oecomprising a rim portion and. a webportion integralwith'the rim portion at spaced intervals alternating with intervals in which the two portions. are structurally separate, the integral intervals being along one side oftheshoe, and the web portion being at one side of the shoe 'at least-at the anchored end of the shoe and being approximately in the central plane of the'shoe at the unanchored-end of the shoe.

13. A brake shoe having a curved friction face and having a stiffening web undulating crosswise ofthe shoe.

14. A brake shoe having an outer rim and an inner flange connected by .a web, and

with portions of the rimand flange folded 

